MovieSceneComponentMobilitySystem.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "EntitySystem/MovieSceneEntityInstantiatorSystem.h"
#include "EntitySystem/MovieScenePreAnimatedStateSystem.h"
#include "EntitySystem/MovieSceneOverlappingEntityTracker.h"
#include "Engine/EngineTypes.h"
#include "Evaluation/PreAnimatedState/IMovieScenePreAnimatedStorage.h"
#include "Evaluation/PreAnimatedState/MovieScenePreAnimatedStorageID.h"
#include "Evaluation/PreAnimatedState/MovieScenePreAnimatedObjectStorage.h"
 
#include "MovieSceneComponentMobilitySystem.generated.h"
 
UCLASS(MinimalAPI)
class UMovieSceneComponentMobilitySystem
    : public UMovieSceneEntityInstantiatorSystem
    , public IMovieScenePreAnimatedStateSystemInterface
{
public:
 
    GENERATED_BODY()
 
    UMovieSceneComponentMobilitySystem(const FObjectInitializer& ObjInit);
 
private:
 
    virtual bool IsRelevantImpl(UMovieSceneEntitySystemLinker* InLinker) const override;
    virtual void OnLink() override final;
    virtual void OnUnlink() override final;
    virtual void OnRun(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents) override final;
 
    //~ IMovieScenePreAnimatedStateSystemInterface interface
    virtual void SavePreAnimatedState(const FPreAnimationParameters& InParameters) override;
    virtual void RestorePreAnimatedState(const FPreAnimationParameters& InParameters) override;
 
private:
 
    UE::MovieScene::TOverlappingEntityTracker<EComponentMobility::Type, FObjectKey> MobilityTracker;
 
    UE::MovieScene::FEntityComponentFilter Filter;
 
    TArray<TTuple<USceneComponent*, EComponentMobility::Type>> PendingMobilitiesToRestore;
};
 
 
namespace UE
{
namespace MovieScene
{
 
struct FPreAnimatedMobilityTraits : FBoundObjectPreAnimatedStateTraits
{
    using KeyType     = FObjectKey;
    using StorageType = EComponentMobility::Type;
 
    void RestorePreAnimatedValue(const FObjectKey& InKey, EComponentMobility::Type Mobility, const FRestoreStateParams& Params);
    EComponentMobility::Type CachePreAnimatedValue(UObject* InObject);
};
 
struct FPreAnimatedComponentMobilityStorage : TPreAnimatedStateStorage_ObjectTraits<FPreAnimatedMobilityTraits>
{
    static TAutoRegisterPreAnimatedStorageID<FPreAnimatedComponentMobilityStorage> StorageID;
 
    FPreAnimatedStateEntry FindEntry(USceneComponent* InSceneComponent);
    FPreAnimatedStateEntry MakeEntry(USceneComponent* InSceneComponent);
};
 
} // namespace MovieScene
} // namespace UE